FPSO Mooring Connections - Subsea UK subsea - subsea europe... · FPSO Mooring Connections FPSO trends and mooring options Ball and taper subsea mooring connectors Ball and taper

FPSO Mooring Connections

Subsea Europe 2011

‘Always Part of the Solution’

Brian Green – 15 November 2011

FPSO Mooring Connections FPSO trends and mooring options Ball and taper subsea mooring connectors Ball and taper mooring

- Turret Mooring - Jubilee Kwame Nkrumah MV21 FPSO

- STP Mooring - Chinook – Cascade / Peregrino FPSOs

Buoy pull-in and abandonment Ball and taper buoy mooring connections

FPSO Trends Fields

- Further offshore

- Adverse sea environment / weather conditions

- Lack of infrastructure

FPSO

- Field hub

- Larger, more on-board processing

- Greater storage capacity

FPSO Mooring Deeper water moorings Mooring flexibility - FPSO needs to move off-station Turret Buoys: external and internal - disconnectable and retrievable

Ball and taper subsea mooring connectors

'Plug-in' Ballgrab connection

Two load bearing components: male mandrel and receptacle

Multi-point grip in direct proportion to load

Self-aligning and self-energising

Over 300 installations

Ball and taper mooring connections

Mooring flexibility: deepwater and shallow water Lean Installation Two part connection: different times, different vessels Mooring line installation: surface to seabed or seabed to surface, buoy mooring

Turret Moored FPSOTurret Moored FPSOKwame Nkrumah FPSO 1,100m water depth, offshore Ghana Bow-mounted turret 9 Series III Ballgrab connectors (5,364kN), polyester line Female receptacle pre-installed on suction pile

Surface to Seabed Mooring Female receptacle, attached to ground chain Trunnion and docking porch Male connector lowered from surface and inserted into receptacle

Submerged Turret Production Buoy Moored FPSO

Chinook-Cascade FPSO First and deepest STP buoy mooring in GoM 2,500m water depth 11 Ballgrab connectors (6,600kN)

Seabed to Surface Mooring Female receptacles pre-installed on STP buoy Mooring lines installed with piles, held midwaterEasier lift and tow out

Maersk Peregrino FPSO Shallow water, Brazil STP buoy, 100m water depth, 10 mooring lines Female receptacles pre-installed on buoy (60 degrees) Easier buoy lift and tow-out

Maersk Peregrino FPSO Spiral wire mooring line retrieved, male connector attached Brace fitted (30 degrees) ROV-activated installation aid – overcome mooring line loading

Maersk Peregrino FPSO ROV-assisted insertion of male connector into receptacle attached to buoy No diver required Buoy moored successfully

Buoy pull-in and abandonment Maersk Peregrino FPSO buoy integral Ballgrab receptacle Male Ballgrab lowered into receptacle Buoy lowered using Ballgrab during abandonment

Buoy retrieval, pull-in and abandonment

Dynamic positioned FPSO, absence of buoy mooring lines Ballgrab male connector uses Doppler TV camera Finds and connects to buoy receptacle

Ball and Taper FPSO Mooring Connections

Two part mooring – Lean Installation Greater customisation of mooring line installation to suit turret and mooring conditions External turret – receptacle on pile Internal turret – receptacle on buoy

- Easier lift and tow out- Fewer, smaller vessels- Safer installation

Mooring line material independent – hybrid lines

Engineering House, Lune Industrial Estate, New Quay Road, Lancaster, LA1 5QP, UK.T : +44 (0)1524 387 777 F : +44 (0)1524 387 777 E :

‘The innovator of engineering excellence, specializing in connection and mooring

solutions’